I rolled for the food event 3 times, got Britanny and some stuff. Nice, since I spent 5400 kobans, which is the price for Epic Pachinko.
Then rolled for the Easter event 3 times, got Malina plus 1 avatar and some stuff. With 5400 kobans, not bad, not bad.
I'd be happier getting Chocolate Maker Abrael and the Clarysse, but the result was good, indeed.
And look, statistics are not meant to be precise with so feel attempts (like your 6, or the other guy 14), the universal rule of probabilities states that you need at least 120 tries for the total sample to represent the actual chance. You may keep on trying and the odds will show you the truth 😃
That said, go for Epic Pachinko who gives you 1 for sure, and with plus 600 kobans, the new Draft gives you the option to choose between 2 girls, and I suspect that the event girls have a higher chance of being drafted in a event-like occasion.